PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
17.3 Transmit Serial Interface (Figure 35)
(T = -40°C to +85°C, V
A DDall33
= 3.3V ±5%, V = 1.8V ±5%)
DD1V8
Table 49 – Transmit Serial Interface
Symbol
Description
Min
Max
Units
TCLK[8:1] Frequency (1.544MHz
±200ppm or 2.048MHz ±200 ppm)
1.544 –
200ppm
2.048
+200ppm
MHz
TCLK[8:1] Jitter
-50
35
20
20
50
65
ns
%
TCLK[8:1] Duty Cycle
tS
TD
TDP[n], TDN[n] to TCLK[n] Set-up Time
TDP[n], TDN[n] to TCLK[n] Hold Time
ns
ns
tH
TD
Figure 35 – Transmit Serial Interface Timing Diagram
TDP[n]
Valid
tSTD
TDN[n]
tHTD
TCLK[n]
Inputs Samped on Rising Edge
TDP[n]
TDN[n]
Valid
tSTD
tHTD
TCLK[n]
Inputs Samped on Falling Edge
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
222
PMC [ PMC-SIERRA, INC ]
